The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 6 days. Why not try and solve them ahead of time?
Gray Code Encoder in all languages in bytes. Achievements Cheevos Holes Languages Medals Miscellaneous All Holes 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Multitap Input Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig 05AB1E APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig Experimental Language 05AB1E APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Hole All 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Multitap Input Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 241st JDiLenarda 🇫🇷 0 65 1,378ms 7 hours ago 242nd Shanethegamer 🇺🇸 0 66 1,317ms 26 Nov 2024 242nd rucin93 🇵🇱 0 66 6ms 8 May 2025 242nd sean-niemann 🇺🇸 0 66 7ms 8 May 2025 242nd AdrienHache 🇫🇷 0 66 421ms 2 Nov 2025 242nd namelessiw 0 66 434ms 2 Nov 2025 242nd GolfingSuccess 🇬🇷 0 66 430ms 4 Feb 2026 242nd albanian-laundromat 0 66 1,391ms 3 days ago 242nd Yax42 🇫🇷 0 66 484ms 2 days ago 242nd fuzzylojik-golf 🇺🇸 0 66 456ms 44 hours ago 242nd edsrzf 🇳🇿 0 66 7ms 16 hours ago 252nd GolfingSuccess 🇬🇷 0 67 12ms 8 May 2025 252nd tomh1012 0 67 429ms 33 hours ago 254th Shanethegamer 🇺🇸 0 68 145ms 26 Nov 2024 254th sean-niemann 🇺🇸 0 68 131ms 8 May 2025 254th edsrzf 🇳🇿 0 68 113ms 25 May 2025 254th GolfingSuccess 🇬🇷 0 68 110ms 2 days ago 254th fuzzylojik-golf 🇺🇸 0 68 1,320ms 5 hours ago 259th GolfingSuccess 🇬🇷 0 69 10ms 8 May 2025 259th CaedenHarper 🇨🇦 0 69 486ms 3 days ago 261st JOrE20 0 70 41ms 13 Feb 2026 262nd kg583 🇺🇸 0 71 27ms 1 Dec 2024 262nd CLOStrophobic 🇮🇹 0 71 13ms 18 Jan 2025 262nd GolfingSuccess 🇬🇷 0 71 14ms 7 May 2025 262nd edsrzf 🇳🇿 0 71 14ms 8 May 2025 262nd AlephSquirrel 0 71 13ms 9 May 2025 267th Shanethegamer 🇺🇸 0 72 27ms 9 Dec 2024 267th dokutan 0 72 62ms 8 Feb 2026 269th GolfingSuccess 🇬🇷 0 73 16ms 8 May 2025 270th not-a-pokemon 0 74 15ms 5 hours ago 271st Shanethegamer 🇺🇸 0 75 99ms 26 Nov 2024 271st sean-niemann 🇺🇸 0 75 103ms 8 May 2025 271st HumanoidCPU 0 75 112ms 9 hours ago 274th GolfingSuccess 🇬🇷 0 76 133ms 28 Nov 2025 274th fuzzylojik-golf 🇺🇸 0 76 99ms 44 hours ago 274th edsrzf 🇳🇿 0 76 131ms 35 hours ago 274th emgordon154 0 76 115ms 16 hours ago 274th MeWhenI 🇻🇦 0 76 98ms 98 mins ago 279th rucin93 🇵🇱 0 77 130ms 8 May 2025 279th ovs-code 🇩🇪 0 77 81ms 30 May 2025 279th Shanethegamer 🇺🇸 0 77 146ms 12 Nov 2025 279th edsrzf 🇳🇿 0 77 7ms 105 mins ago 283rd saito-ta 🇯🇵 0 78 4ms 10 May 2025 283rd rhdqor213 0 78 4ms 10 May 2025 283rd albanian-laundromat 0 78 100ms 3 days ago 283rd fuzzylojik-golf 🇺🇸 0 78 8ms 6 hours ago 283rd edsrzf 🇳🇿 0 78 425ms 5 mins ago 288th GolfingSuccess 🇬🇷 0 79 79ms 14 May 2025 289th sean-niemann 🇺🇸 0 80 455ms 8 May 2025 290th kumavale 0 81 156ms 26 Nov 2025 290th Matter1024 🇮🇳 0 81 45ms 14 Feb 2026 290th albanian-laundromat 0 81 45ms 3 days ago 290th fuzzylojik-golf 🇺🇸 0 81 9ms 7 hours ago 294th GolfingSuccess 🇬🇷 0 82 502ms 8 May 2025 294th emgordon154 0 82 159ms 14 Feb 2026 294th emgordon154 0 82 518ms 18 hours ago 294th GolfingSuccess 🇬🇷 0 82 7ms 4 mins ago 298th Shanethegamer 🇺🇸 0 83 484ms 26 Nov 2024 298th Shanethegamer 🇺🇸 0 83 403ms 9 Jul 2025 298th fantaize 0 83 156ms 15 days ago 298th GolfingSuccess 🇬🇷 0 83 33ms 18 hours ago 298th MeWhenI 🇻🇦 0 83 229ms 9 hours ago 303rd Shanethegamer 🇺🇸 0 84 416ms 26 Nov 2024 303rd ovs-code 🇩🇪 0 84 12ms 10 May 2025 303rd fuzzylojik-golf 🇺🇸 0 84 444ms 44 hours ago 303rd KasperKivimaeki 🇫🇮 0 84 12ms 3 hours ago 307th edsrzf 🇳🇿 0 85 42ms 8 May 2025 307th edsrzf 🇳🇿 0 85 18ms 9 May 2025 307th error256 0 85 18ms 10 May 2025 307th GolfingSuccess 🇬🇷 0 85 3ms 14 Jan 2026 311th Shanethegamer 🇺🇸 0 86 147ms 17 Dec 2024 311th kg583 🇺🇸 0 86 39ms 16 Feb 2025 311th GolfingSuccess 🇬🇷 0 86 44ms 7 May 2025 311th GolfingSuccess 🇬🇷 0 86 2,577ms 8 May 2025 311th edsrzf 🇳🇿 0 86 155ms 9 May 2025 311th sean-niemann 🇺🇸 0 86 496ms 25 Sep 2025 311th MeWhenI 🇻🇦 0 86 381ms 21 Nov 2025 311th GolfingSuccess 🇬🇷 0 86 399ms 12 Jan 2026 311th elgan65536 🇺🇸 0 86 168ms 24 days ago 311th CaedenHarper 🇨🇦 0 86 399ms 3 days ago First Prev 241–320 of 397 Next Last